THe NAC Lots-O-BFG KO2 Thread

[ROBZ95Xj]

Re: THe NAC Lots-O-Post Thread

got $20 credit on my autozone card gonna do a complete fluid change in the ax15 tomorow and try to finish up the brakes in the truck, then bring the car in for 2 new tires, should be a fun day.

 

[XBoBJ]

Re: THe NAC Lots-O-Post Thread

97+? I got one off black jeep. its the flat plug style.

yeahh!!

 

[MoparManiac]

Re: THe NAC Lots-O-Post Thread

got $20 credit on my autozone card gonna do a complete fluid change in the ax15 tomorow and try to finish up the brakes in the truck, then bring the car in for 2 new tires, should be a fun day.

I imploded your muffler.

 

[squashman702]

Re: THe NAC Lots-O-Post Thread

I imploded your muffler.

You would.

 

[MoparManiac]

Re: THe NAC Lots-O-Post Thread

I'm just gonna get a cheap summitracing turbo muffler. Maybe quiet it down a bit at idle.

I don't want to spend big money on the exhaust on this thing. I only have like $150-200 into it tops right now including headers/gaskets and shit.

3" is not big enough but it's all I could fit.

 

[foxwar71]

Re: THe NAC Lots-O-Post Thread

yeahh!!

all yours Bobby boy, now we just gotta figure out how to get it to you

 

[ktm racer 419]

Re: THe NAC Lots-O-Post Thread

I'm just gonna get a cheap summitracing turbo muffler. Maybe quiet it down a bit at idle.

I don't want to spend big money on the exhaust on this thing. I only have like $150-200 into it tops right now including headers/gaskets and shit.

3" is not big enough but it's all I could fit.

im debating what I'm gonna do.

either build a downpipe to a single 3" exhaust, or make my 2.5" duals work.

so far I just have a little bit of the factory y pipe at each manifold and I picked up a couple cheap flex joints.

 

[MoparManiac]

Re: THe NAC Lots-O-Post Thread

im debating what I'm gonna do.

either build a downpipe to a single 3" exhaust, or make my 2.5" duals work.

so far I just have a little bit of the factory y pipe at each manifold and I picked up a couple cheap flex joints.

Here's a general rule of thumb I found on exhaust diameters.

As far as ability of an exhaust system to flow enough air for a given amount of horsepower without causing significant back pressure, this is from one of David Vizard's books:

1. For avoiding significant restriction from back pressure, the pipe should flow at least 2.2CFM per horsepower produced.

2. A straight pipe will flow ~115CFM per square inch of area (using inside diameter of the pipe)


Mufflers usually won't flow as much as a straight pipe of the same inlet/outlet diameter, so you have to factor that in, also.

And a link to some header primary tube calculations. The tables are for Mopar displacements but I'm sure you can get a close enough idea for your 6.0 = ~ 366 ci.

http://victorylibrary.com/mopar/header-tech-c.htm

My 1.75" headers are ok, granted they're not long tube, but my 3" single pipe is hurting me.

I don't plan on redoing it unless I get really bored. In the future (few years) I'll probably build a buggy chassis and transfer 90% of my parts over.

 

[ROBZ95Xj]

Re: THe NAC Lots-O-Post Thread

I'm just gonna get a cheap summitracing turbo muffler. Maybe quiet it down a bit at idle.

I don't want to spend big money on the exhaust on this thing. I only have like $150-200 into it tops right now including headers/gaskets and shit.

3" is not big enough but it's all I could fit.

The internals come apart? I'm guessing there quality went down the shitter, I got the same one on my jeep but I got it in 08 for my f150, I'm sure you will blow out a turbo to but atleast there wicked cheap

 

[MoparManiac]

Re: THe NAC Lots-O-Post Thread

No I had a few backfires.

I'm pretty sure it happened during one of them :laugh:

I don't think the internals came apart. It just looks imploded.

 

[ktm racer 419]

Re: THe NAC Lots-O-Post Thread

stupid math.

i just figured 2.5" y pipe to 3" was factory and would work fine, and I also figured I have dual 2.5" right now.

 

[MoparManiac]

Re: THe NAC Lots-O-Post Thread

Just trying to save you from doing something twice.

If you can legitimately get over 400 HP, I would think you'd want more than a 3" single.

 

[ktm racer 419]

Re: THe NAC Lots-O-Post Thread

Just trying to save you from doing something twice.

If you can legitimately get over 400 HP, I would think you'd want more than a 3" single.

Dual 8" chrome stacks should be fine.

 

[billyjp2]

Re: THe NAC Lots-O-Post Thread

zoomies

 

[MoparManiac]

Re: THe NAC Lots-O-Post Thread

Now you're on the right track.

 

[ktm racer 419]

Re: THe NAC Lots-O-Post Thread

Will flappers help with back pressure?

 

[asp]

Re: THe NAC Lots-O-Post Thread

Will flappers help with back pressure?

A rubber band to hold it down and you'll be good.

 

[MoparManiac]

Re: THe NAC Lots-O-Post Thread

Some dude building a Saab buggy on Pirate.

Everyone telling him he's an idiot.

Hilarious, but sad. I love seeing different drivetrain builds.

LS / TH400 / Atlas gets so effing boring.

 

[ktm racer 419]

Re: THe NAC Lots-O-Post Thread

My drive train is super original.

 

[MoparManiac]

Re: THe NAC Lots-O-Post Thread

Mine is super retarded.